Title :
The thermal analysis of fluid flow parallel to rotating surfaces
Author_Institution :
Dept. of Mech. Eng., Sheffield Univ., UK
fDate :
27 Jul-1 Aug 1997
Abstract :
A numerical analysis has been made of the thermal analysis of fluid flow parallel to rotating surfaces with a two dimensional analysis and an allowance for a swirling component of velocity around the cylinder. The maximum blowing Reynolds number, ReL, based on the length of the cylinder, was 250000 and the rotational Reynolds number, ReD based on the diameter of the cylinder, varied from 3000 to 30000. Buoyancy effects were neglected and turbulent flow assumed, these assumptions being supported by the experimental work. The data was correlated by a single equation for the range of Reynolds numbers considered. This result was applied to work on the application of electro-structured fluids to high speed rotating machines which has indicated the need for more general correlations for the prediction of heat transfer from rotating cylindrical surfaces in the presence of external airflows
Keywords :
heat transfer; rotational flow; swirling flow; thermal analysis; turbulence; buoyancy effects; electro-structured fluids; external airflows; heat transfer prediction; high speed rotating machines; maximum blowing Reynolds number; parallel fluid flow; rotating cylindrical surfaces; rotating surfaces; rotational Reynolds number; swirling velocity component; thermal analysis; turbulent flow; Computational modeling; Engine cylinders; Equations; Fluid flow; Heat transfer; Mechanical engineering; Numerical analysis; Telephony; Thermal engineering; Viscosity;
Conference_Titel :
Energy Conversion Engineering Conference, 1997. IECEC-97., Proceedings of the 32nd Intersociety
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-4515-0
DOI :
10.1109/IECEC.1997.661997
